PPT Slide
Galaxy Formation And Evolution
Galaxy Formation: The Lyman ? Forest
Some QSOs show sharp Ly-? absorption lines that are not physically associated with the QSOs (obvious by their differing redshifts)….
Often many systems with different redshifts are seen in fron of a single QSO
Low velocity dispersion T ? 105 K
Primordial Gas Clouds That Have Not Yet Formed Galaxies?
For a review of the Lyman- ? Forest, see:
Rauch, 1998, ARAA, 36, 267